Prove that:
( sec 4A - 1 ) / ( sec 2A - 1 )
=
tan 4A . cot A
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Answers
Answer:
sec 1A = tan 2A
Step-by-step explanation:
BABAOEY
Related Questions
in this picture lines AB and CD are parallel. Find the measures of the following angles. Explain your reasoning.
Answers
Answer/Step-by-step explanation:
1. <ABC and <BCD are alternate interior angles. Alternate interior angles are equal, therefore, since m<ABC = 38°, then m<BCD = 38°
2. m<ECF = m<BCD (corresponding angles)
m<ECF = 38° (substitution)
3. m<DCF + m<ECF = 180° (linear pair)
m<DCF + 38° = 180° (substitution)
m<DCF = 180° - 38° (Subtraction property of equality)
m<DCF = 142°
The measure of the following angles are as follows;
∠BCD = 38°
∠ECF = 38°
∠DCF = 142°
Angles form when a transversal cut parallel linesWhen a transversal line cut across parallel lines, the angles form include corresponding angles, alternate angles etc.
Therefore,
∠BCD = 38 degrees(alternate angles)
∠ECF = 38 degrees(corresponding angles)
∠DCF = 180 - 38 = 142 degrees(angles on a straight line)
learn more on angles here: https://brainly.com/question/18346402
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Two siblings Edwin and Rhea are both going skiing but choose different payment plans. Edwin's plan charges $45 for rentals and $5.25 per lift up the mountain. Rhea's plan was a bundle where her entire day cost $108. Set up an inequality that models the number of trips, n, up the mountain for which Edwin will pay more than Rhea. Solve the inequality. Also, what is the greatest amount of trips that Edwin can take up the mountain and still pay less than Rhea? Explain how you arrived at your answer.
Answers
Answer:
n>12
Step-by-step explanation
45+5.25n>108
-45 -45
5.25n > 63
then divide both sides by 5.25
n>12
4. Determine the value of x.
Answers
Answer:
x=16
Step-by-step explanation:
(16*3)-2
48-2
46
134+46=180
Select the correct answer.
Which equation represents the vertical line passing through (7,-3)?
A.
x = -3
B.
y = -3
C.
x = 7
D.
y = 7
Answers
Answer:
C. [tex]x=7[/tex]
Step-by-step explanation:
So we know that a vertical line is represented by [tex]x=[/tex] so we can already rule out two of the options. We also know that since the line runs vertically, all points will start with the same [tex]x[/tex] coordinate. This means that the correct answer is [tex]x=7[/tex]
Answer:
the answer is c x=7
Step-by-step explanation:
PLEASE HELP ME WITH THIS PROBLEM!!!!!!!!!!
The following figures are not drawn to scale but AB and CD are straight lines. Find x.
Answers
Answer: x = 30
Step-by-step explanation:
Since AB and CD are straight lines, vertical angles formed by them are congruent. Angle DOB is equal to angle AOC which is equal to 2x. Since you know that a straight angle is equal to 180 degrees, you can say :
2x + 90 + x = 180
3x + 90 = 180
3x = 90
x=30
Hope this helped :)
Factor each of the following polynomials completely
1. 4x + 8
2.9x² - 25
3.x² + 4x + 4
Answers
Answer:
ok:
Step-by-step explanation:
1. 4(x+2)
2. (3x + 5)(3x - 5)
3. [tex](x+2)^2[/tex]
Answer:
1. 4(x+2)
2. (3x+5)(3x-5)
3. (x+2)(x+2)
Step-by-step explanation:
HELP HELP HELP
A house painting company charges $350 plus $15 per hour. Another company charges $275 plus $20 per hour. Write an equation that represents when both companies will cost the same amount. How long will the job be when both companies charge the same amount? How much will they charge?
Question 1: Write an equation.
Question 2: How long will the job be when both companies will cost the same amount?
Question 3: How much will they charge?
Answers
Answer:
BelowI hope it helps ♥Step-by-step explanation:
1. Equation representing when both companies will cost the same amount :
[tex]350 + 15x = 275 + 20x[/tex]
2. Let x equal the number of hours a job takes , then the first house painting company will charge 350+15x , the second house painting will charge 275 +20x. If the two companies charge the same amount , we will have;
[tex]350 +15x = 275+20x\\\\350 - 275 = 20x - 15x\\\\75 = 5x\\\\\frac{75}{5} = \frac{5x}{5} \\\\15 = x\\\\x = 15\:hours[/tex]
3. For a job that takes 15 hours , the first company will cost ;
[tex]350 + 15(15) = 575[/tex]
For a job that takes 15 hours , the second company will cost ;
[tex]275+20x\\\\275+20(15)\\\\275 +300\\\\=575[/tex]
If Syn spends 15 minutes running, he burns 200 calories. How long will it take Syn to burn 150 calories?
Answers
Answer:
11 minutes and 15 seconds (11.25 minutes/ 11 and 1/4)
Step-by-step explanation:
create the corresponding ratio by dividing 200 by 15, 200 calories per 15 minutes. Which equates to 40 calories every three minutes which means 40/3 or 13 1/3 calories every minute. You can verify this by multiplying 15 and 40/3 to get 200 again.
The last step is to divide the calories burned by the corresponding ratio (40/3)
150/(40/3) = 11.25
and .25 or 1/4 of 60 seconds(in a minute) is 15 since 60/4 = 15.
PLEASE HELP I WILL MARK
Answers
Answer:
2. 5
3. 2 dollars a peice
that is all i know sorry
Step-by-step explanation:
hope it heps you
Answer(s):
5 miles per hour
2 dollars per battery
6 pages in a minute
10 miles per gallon
2 inches per hour
Step-by-step explanation:
30/6=5
24/12=2
40/8=6
60/6=10
16/8=2
what is
5y+3=4y+8=146
Answers
Answer: y=15
Step-by-step explanation:
Solution for (5y+3)+(4y+8)=146 equation:
Simplifying
(5y + 3) + (4y + 8) = 146
Reorder the terms:
(3 + 5y) + (4y + 8) = 146
Remove parenthesis around (3 + 5y)
3 + 5y + (4y + 8) = 146
Reorder the terms:
3 + 5y + (8 + 4y) = 146
Remove parenthesis around (8 + 4y)
3 + 5y + 8 + 4y = 146
Reorder the terms:
3 + 8 + 5y + 4y = 146
Combine like terms: 3 + 8 = 11
11 + 5y + 4y = 146
Combine like terms: 5y + 4y = 9y
11 + 9y = 146
Solving
11 + 9y = 146
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '-11' to each side of the equation.
11 + -11 + 9y = 146 + -11
Combine like terms: 11 + -11 = 0
0 + 9y = 146 + -11
9y = 146 + -11
Combine like terms: 146 + -11 = 135
9y = 135
Divide each side by '9'.
y = 15
I need help solving these problems.
Answers
This type of triangle always has two congruent legs and two congruent
base angles. *
Answers
Answer:
Isosceles is correct........
Answer:
isosceles triangle
Step-by-step explanation:
What’s the answer pls answer fast
Answers
181-28= 153
So 181 would be your answer.
Please help and thank you for helping me out
Answers
Step-by-step explanation:
1. d=30
2. b=8
3. n=-7
5. v=17
6.x=-13
7. b=48
Dived 41.04 by 1.6.
Answers
Answer:
25.65
Step-by-step explanation:
Answer: 25.65
No explanation lol
Which don’t lie??????????!!!!!
Answers
Answer:
I think its -12. If you apply y2-y1/ x2-x1 to the equation.
Answer:
i belive that it might be c
Step-by-step explanation:
which is -12
what is x and y equal to if x divided by y = 6
Answers
Answer:
x=12 a and y=2
Step-by-step explanation:
Solve for b: 3ab = -7
Answers
Since we are solving for b, you need to get it by itself. So you would divide both sides by 3a. That would leave b= -7/3a.
Hope this helps!!
what is the y-intercept
Answers
Answer: D. (0, 1)
Step-by-step explanation: y - intercept is when x = 0. Anything to the power of 0 is 1. So, it would be D. (0, 1)
If 247 players separated into 13 equal teams, how many players will be on each team?
Answers
When rounded to the hundreds place, which of the numbers below round to 456,700?
A) 456,605
B) 456,739
C) 456,798
D) 456,698
E) 45,673
Answers
Answer:
If you can only pick one option I'd choose D.)
Step-by-step explanation:
Option D is only two numbers away from 456,700
The second closest number would be option B.)
Answer:
[tex]D) . \: 456,698 = 456,700 \: to \: the \: hundreds \: place.[/tex]
The total cost, y, for Leah and x friends to go to an amusement park can be modeled by a linear function. The amusement park charges an entrance fee of $45.25 per person and a parking fee of $10 per car. Leah's car has seating for a maximum of 6 people.
What is the domain of the function for this situation?
Answers
45x6=270.270 is the total for the friends.However instead you have to do 45x7=315.Because its Leahs friends and LEAH.So now the car.315+10=325.So your answer is 325
421 × 18 ≈ ____ × ____ = ____
Answers
Answer:
Step-by-step explanation:
3473 8209ewu8wpwads =a d=waduwa sd a-= dwausS-d wa-sd was-d-aaa-d w=a dwa98-dhs;odwa s7dwa=w=da=da-dad-a w8ahspd-wasd wa-d 8-wasdwaf 0rgk9r8f
Answer:
18 x 421 = 7578
Step-by-step explanation:
421 x 18 = 7578
Which explains how you round 212.809 to the nearest hundredth?
Answers
Answer:
212.81
Step-by-step explanation:
The Hundredth is the Underlined number:
212.8 0 9. 0 is in the Hundreths place so round either up or down. In this case we round up sence 9 is bigger then 5. So you would have a new number of 212.81. Hope This Helps! Rate Brainiest!
-Aslina
which expression can be used to solve 3/5 divided by 7/10?
Answers
Answer:
C
Step-by-step explanation:
Keep Change Flip
Keep the first; change divided by multiply; then flip the last
What is 80% as a fraction in reduced form?
Answers
Answer:
45
Step-by-step explanation:
Answer:
4/5
Step-by-step explanation:
9
2 points
Item 9 is unpinned. Click to pin.
Fill in the blanks by creating the line perpendicular to
y
=
1
3
x
−
3
y=
3
1
x−3 that goes through (-1, -4) in slope intercept form.
FOR YOUR ANSWER, ONLY TYPE NUMBERS.
y =
Question Blank
x -
Question Blank
Answers
Answer: uhh
Step-by-step explanation:
I really don’t know how to do it.
You pick a ceratin amiunt of
Answers
Answer:
Okay so if your current scores are 93, 97, 89 and 81, You would have to score at least a 90. Even if you scored a 100%, the highest you would be able to make is a 92 average.
Step-by-step explanation:
Here's the thing about average, all you do is take all of the numbers, add them up, then divide them by the number of numbers there are.
For example, 93 + 97 + 89 + 81 = 360. There are 4 numbers so you would take 360 and divide it by 4 which gets you 90. 90 is your average.
To figure out the highest score you are able to get, take the highest score you can possibly score (100) and add it to the mix. 93 + 97 + 89 + 81 + 100 = 460. Now, there are 5 numbers. So you take 460 and divide it by 5 which will get you 92.
Hope I helped.
Whats is the answer of 1x3x4x6+1
Answers
Answer:
73
Step-by-step explanation:
Answer:73
Step-by-step explanation:
Think about the expression (x-8)(x+4)
Answers
Answer:
x*x +4*x-8*x -8*4
x^2+4x-8x-32
x^2-4x-32